The column function will calculate its result based on the individual groups created by the GROUP BY specification. In other word, if 500 groups were created by a GROUP BY clause, there would be 500 individual results_one for each group.
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The column function will calculate its result based on the individual groups created by the GROUP BY specification. In other word, if 500 groups were created by a GROUP BY clause, there would be 500 individual results_one for each group.